hp fire
Snow warning
I figured why not make it as fast and offensive as possible. I've seen this set in action and it can take out at least one poke and reduce the others hp to where another poke can take it out.

Mamoswine @ leftovers
Jolly
252atk 252spd 4def

stealthrock

earthquake

icicle crach

stone edge
Snowcloak
Its a good poke for hail cuz of its ability and extremely high atk.

Starmie @ leftovers
Bold
252hp 252def 4spdef

rapid spin

whirlpool

thunderwave

recover
Natural cure
It's ment to cause problems and with max hp it does it quite nicely.

Dat Fighting weakness...Also, what are you trying to accomplish with Blissey? It should be a support Pokemon, so drop either Fire Blast or Blizzard, and add another support move. Put the Special Attack EVs in HP, and Wish>Softboiled.

I dislike the move brave bird and id like my mamoswine to stick around and life or keeps it from doing that. Starmie is verry original and whirl pool and hail suck to go up against. And abomasnow dont have blizzard cuz of tyranitar and sand sream. Abomasnow's blizzard would loose accuracy in that case. I realize my team has a fighting weakness but scarmory can handle them and so can the bulky starmie.

If I predict right, blissey could deal a good bit of damage to a fighting type that switches in but I like my stally starmie, its original and has surprise value. But blissey must have softboiled or wish.